There is some inconsistency in the coastline of Svalbard and Jan Mayen, Norway (see figure) which you might also want to address. A high resolution coastline set is available from the Norwegian Polar Institute. I've used the 1:100 000 set in my figure (highest resolution).

Copy that, Joaquim. NE Greenland is a part of the world that is under intense study. I would think that having corrected coastlines would be a high priority and that "data madness" issues can ultimately be overcome. Thanks for the reply. This, indeed, isn't good news...